Blood, Lymph & Immune Short Answer
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Describe platelets | thrombocytes, cell fragments, initiate blood clotting, smallest formed elements found in the blood, hemostasis
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| Describe red blood cells | erythrocytes, transport O2 and CO2, most numerous circulating blood cells, during erythropoiesis they decrease in size, shaped in biconcave disks, develop Hb/Hgb (gives them their red colour), Hb carries O2 to body tissue and exchanges it for CO2
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| Describe the spleen | acts as a filter, resembles a lymph node, Destroys old RBCs, stores healthy blood cells
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| Describe the thymus | responsible for cellular immunity, transforms lymphocytes into T cells, located in the mediastinum
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| Describe the tonsils | Masses of lymphatic tissue(palatine) located in the pharynx, protect upper respiratory structures -acts as filters
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| Describe white blood cells | protect the body from pathogens, remove debris from injured tissue, aid in healing process, diapedesis, initial inflammation & immune response -phagocytic -some granulocytes, some agranulocytes -migrate through capillaries & venules
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| List autoimmune diseases | Myasthenia gravis -rheumatoid arthritis -systemic lupus erythematosus -AIDS -allergies -thrombocytopenia -vasculitis
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| What is the function of histamines? | initiates the inflammatory process by increasing blood flow
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| What are the two ducts of the lymph system? | thoracic duct and right lymphatic duct
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| What are the four types of T cells? | cytotoxic, helper, suppressor and memory
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| What are the functions of the lymph system? | -maintain fluid balance -transport lipids away from GI system -filter and remove unwanted infectious products
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| What is an allergy? | acquired abnormal immune response
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| What is hematology? | study of blood cells, blood clotting mechanism, bone marrow & lymph nodes
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| What is heparin? | acts to prevent blood from clotting at the injury site
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